Fatal: PEB: 285: Bad Read Offset Request

[Christian Marangi]

I'm trying to decompress this file... it doesn't give me any crc error just this

guess_start_offset Found UBI magic number at 0
guess_filetype Looking for file type at 0
guess_filetype File looks like a UBI image.
UBI_File Open Path: 2C0000.ubi
UBI_File File Size: 37355540
UBI_File Start Offset: 0
UBI_File End Offset: 37355540
UBI_File Block Size: 131072
extract_blocks Block: PEB# 0: LEB# 0
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read Error: Block ends at 37486592 which is greater than file size 37355540
extract_blocks Fatal: PEB: 285: Bad Read Offset Request

here the file

https://repository.ilpuntotecnicoeadsl.com/index.php?dir=Ansuel/&file=2C0000.ubi

[Jason Pruitt]

Hi Ansuel, If this is from a NAND dump or something similar, that generally means the dump is not complete, and there is some data left on the device that was not captured. It could also mean there is some corrupted data, that is throwing off ubi_reader as it jumps from block to block.

…

-Jason

On Wed, May 9, 2018 at 1:35 PM, Ansuel Smith ***@***.***> wrote: I'm trying to decompress this file... it doesn't give me any crc error just this guess_start_offset Found UBI magic number at 0 guess_filetype Looking for file type at 0 guess_filetype File looks like a UBI image. UBI_File Open Path: 2C0000.ubi UBI_File File Size: 37355540 UBI_File Start Offset: 0 UBI_File End Offset: 37355540 UBI_File Block Size: 131072 extract_blocks Block: PEB# 0: LEB# 0 extract_blocks Block: PEB# 1: LEB# 1 extract_blocks Block: PEB# 2: LEB# 0 extract_blocks Block: PEB# 3: LEB# 1 extract_blocks Block: PEB# 4: LEB# 2 extract_blocks Block: PEB# 5: LEB# 3 extract_blocks Block: PEB# 6: LEB# 4 extract_blocks Block: PEB# 7: LEB# 5 extract_blocks Block: PEB# 8: LEB# 6 extract_blocks Block: PEB# 9: LEB# 7 extract_blocks Block: PEB# 10: LEB# 8 extract_blocks Block: PEB# 11: LEB# 9 extract_blocks Block: PEB# 12: LEB# 10 extract_blocks Block: PEB# 13: LEB# 11 extract_blocks Block: PEB# 14: LEB# 12 extract_blocks Block: PEB# 15: LEB# 13 extract_blocks Block: PEB# 16: LEB# 14 extract_blocks Block: PEB# 17: LEB# 15 extract_blocks Block: PEB# 18: LEB# 16 extract_blocks Block: PEB# 19: LEB# 17 extract_blocks Block: PEB# 20: LEB# 18 extract_blocks Block: PEB# 21: LEB# 19 extract_blocks Block: PEB# 22: LEB# 20 extract_blocks Block: PEB# 23: LEB# 21 extract_blocks Block: PEB# 24: LEB# 22 extract_blocks Block: PEB# 25: LEB# 23 extract_blocks Block: PEB# 26: LEB# 24 extract_blocks Block: PEB# 27: LEB# 25 extract_blocks Block: PEB# 28: LEB# 26 extract_blocks Block: PEB# 29: LEB# 27 extract_blocks Block: PEB# 30: LEB# 28 extract_blocks Block: PEB# 31: LEB# 29 extract_blocks Block: PEB# 32: LEB# 30 extract_blocks Block: PEB# 33: LEB# 31 extract_blocks Block: PEB# 34: LEB# 32 extract_blocks Block: PEB# 35: LEB# 33 extract_blocks Block: PEB# 36: LEB# 34 extract_blocks Block: PEB# 37: LEB# 35 extract_blocks Block: PEB# 38: LEB# 36 extract_blocks Block: PEB# 39: LEB# 37 extract_blocks Block: PEB# 40: LEB# 38 extract_blocks Block: PEB# 41: LEB# 39 extract_blocks Block: PEB# 42: LEB# 40 extract_blocks Block: PEB# 43: LEB# 41 extract_blocks Block: PEB# 44: LEB# 42 extract_blocks Block: PEB# 45: LEB# 43 extract_blocks Block: PEB# 46: LEB# 44 extract_blocks Block: PEB# 47: LEB# 45 extract_blocks Block: PEB# 48: LEB# 46 extract_blocks Block: PEB# 49: LEB# 47 extract_blocks Block: PEB# 50: LEB# 48 extract_blocks Block: PEB# 51: LEB# 49 extract_blocks Block: PEB# 52: LEB# 50 extract_blocks Block: PEB# 53: LEB# 51 extract_blocks Block: PEB# 54: LEB# 52 extract_blocks Block: PEB# 55: LEB# 53 extract_blocks Block: PEB# 56: LEB# 54 extract_blocks Block: PEB# 57: LEB# 55 extract_blocks Block: PEB# 58: LEB# 56 extract_blocks Block: PEB# 59: LEB# 57 extract_blocks Block: PEB# 60: LEB# 58 extract_blocks Block: PEB# 61: LEB# 59 extract_blocks Block: PEB# 62: LEB# 60 extract_blocks Block: PEB# 63: LEB# 61 extract_blocks Block: PEB# 64: LEB# 62 extract_blocks Block: PEB# 65: LEB# 63 extract_blocks Block: PEB# 66: LEB# 64 extract_blocks Block: PEB# 67: LEB# 65 extract_blocks Block: PEB# 68: LEB# 66 extract_blocks Block: PEB# 69: LEB# 67 extract_blocks Block: PEB# 70: LEB# 68 extract_blocks Block: PEB# 71: LEB# 69 extract_blocks Block: PEB# 72: LEB# 70 extract_blocks Block: PEB# 73: LEB# 71 extract_blocks Block: PEB# 74: LEB# 72 extract_blocks Block: PEB# 75: LEB# 73 extract_blocks Block: PEB# 76: LEB# 74 extract_blocks Block: PEB# 77: LEB# 75 extract_blocks Block: PEB# 78: LEB# 76 extract_blocks Block: PEB# 79: LEB# 77 extract_blocks Block: PEB# 80: LEB# 78 extract_blocks Block: PEB# 81: LEB# 79 extract_blocks Block: PEB# 82: LEB# 80 extract_blocks Block: PEB# 83: LEB# 81 extract_blocks Block: PEB# 84: LEB# 82 extract_blocks Block: PEB# 85: LEB# 83 extract_blocks Block: PEB# 86: LEB# 84 extract_blocks Block: PEB# 87: LEB# 85 extract_blocks Block: PEB# 88: LEB# 86 extract_blocks Block: PEB# 89: LEB# 87 extract_blocks Block: PEB# 90: LEB# 88 extract_blocks Block: PEB# 91: LEB# 89 extract_blocks Block: PEB# 92: LEB# 90 extract_blocks Block: PEB# 93: LEB# 91 extract_blocks Block: PEB# 94: LEB# 92 extract_blocks Block: PEB# 95: LEB# 93 extract_blocks Block: PEB# 96: LEB# 94 extract_blocks Block: PEB# 97: LEB# 95 extract_blocks Block: PEB# 98: LEB# 96 extract_blocks Block: PEB# 99: LEB# 97 extract_blocks Block: PEB# 100: LEB# 98 extract_blocks Block: PEB# 101: LEB# 99 extract_blocks Block: PEB# 102: LEB# 100 extract_blocks Block: PEB# 103: LEB# 101 extract_blocks Block: PEB# 104: LEB# 102 extract_blocks Block: PEB# 105: LEB# 103 extract_blocks Block: PEB# 106: LEB# 104 extract_blocks Block: PEB# 107: LEB# 105 extract_blocks Block: PEB# 108: LEB# 106 extract_blocks Block: PEB# 109: LEB# 107 extract_blocks Block: PEB# 110: LEB# 108 extract_blocks Block: PEB# 111: LEB# 109 extract_blocks Block: PEB# 112: LEB# 110 extract_blocks Block: PEB# 113: LEB# 111 extract_blocks Block: PEB# 114: LEB# 112 extract_blocks Block: PEB# 115: LEB# 113 extract_blocks Block: PEB# 116: LEB# 114 extract_blocks Block: PEB# 117: LEB# 115 extract_blocks Block: PEB# 118: LEB# 116 extract_blocks Block: PEB# 119: LEB# 117 extract_blocks Block: PEB# 120: LEB# 118 extract_blocks Block: PEB# 121: LEB# 119 extract_blocks Block: PEB# 122: LEB# 120 extract_blocks Block: PEB# 123: LEB# 121 extract_blocks Block: PEB# 124: LEB# 122 extract_blocks Block: PEB# 125: LEB# 123 extract_blocks Block: PEB# 126: LEB# 124 extract_blocks Block: PEB# 127: LEB# 125 extract_blocks Block: PEB# 128: LEB# 126 extract_blocks Block: PEB# 129: LEB# 127 extract_blocks Block: PEB# 130: LEB# 128 extract_blocks Block: PEB# 131: LEB# 129 extract_blocks Block: PEB# 132: LEB# 130 extract_blocks Block: PEB# 133: LEB# 131 extract_blocks Block: PEB# 134: LEB# 132 extract_blocks Block: PEB# 135: LEB# 133 extract_blocks Block: PEB# 136: LEB# 134 extract_blocks Block: PEB# 137: LEB# 135 extract_blocks Block: PEB# 138: LEB# 136 extract_blocks Block: PEB# 139: LEB# 137 extract_blocks Block: PEB# 140: LEB# 138 extract_blocks Block: PEB# 141: LEB# 139 extract_blocks Block: PEB# 142: LEB# 140 extract_blocks Block: PEB# 143: LEB# 141 extract_blocks Block: PEB# 144: LEB# 142 extract_blocks Block: PEB# 145: LEB# 143 extract_blocks Block: PEB# 146: LEB# 144 extract_blocks Block: PEB# 147: LEB# 145 extract_blocks Block: PEB# 148: LEB# 146 extract_blocks Block: PEB# 149: LEB# 147 extract_blocks Block: PEB# 150: LEB# 148 extract_blocks Block: PEB# 151: LEB# 149 extract_blocks Block: PEB# 152: LEB# 150 extract_blocks Block: PEB# 153: LEB# 151 extract_blocks Block: PEB# 154: LEB# 152 extract_blocks Block: PEB# 155: LEB# 153 extract_blocks Block: PEB# 156: LEB# 154 extract_blocks Block: PEB# 157: LEB# 155 extract_blocks Block: PEB# 158: LEB# 156 extract_blocks Block: PEB# 159: LEB# 157 extract_blocks Block: PEB# 160: LEB# 158 extract_blocks Block: PEB# 161: LEB# 159 extract_blocks Block: PEB# 162: LEB# 160 extract_blocks Block: PEB# 163: LEB# 161 extract_blocks Block: PEB# 164: LEB# 162 extract_blocks Block: PEB# 165: LEB# 163 extract_blocks Block: PEB# 166: LEB# 164 extract_blocks Block: PEB# 167: LEB# 165 extract_blocks Block: PEB# 168: LEB# 166 extract_blocks Block: PEB# 169: LEB# 167 extract_blocks Block: PEB# 170: LEB# 168 extract_blocks Block: PEB# 171: LEB# 169 extract_blocks Block: PEB# 172: LEB# 170 extract_blocks Block: PEB# 173: LEB# 171 extract_blocks Block: PEB# 174: LEB# 172 extract_blocks Block: PEB# 175: LEB# 173 extract_blocks Block: PEB# 176: LEB# 174 extract_blocks Block: PEB# 177: LEB# 175 extract_blocks Block: PEB# 178: LEB# 176 extract_blocks Block: PEB# 179: LEB# 177 extract_blocks Block: PEB# 180: LEB# 178 extract_blocks Block: PEB# 181: LEB# 179 extract_blocks Block: PEB# 182: LEB# 180 extract_blocks Block: PEB# 183: LEB# 181 extract_blocks Block: PEB# 184: LEB# 182 extract_blocks Block: PEB# 185: LEB# 183 extract_blocks Block: PEB# 186: LEB# 184 extract_blocks Block: PEB# 187: LEB# 185 extract_blocks Block: PEB# 188: LEB# 186 extract_blocks Block: PEB# 189: LEB# 187 extract_blocks Block: PEB# 190: LEB# 188 extract_blocks Block: PEB# 191: LEB# 189 extract_blocks Block: PEB# 192: LEB# 190 extract_blocks Block: PEB# 193: LEB# 191 extract_blocks Block: PEB# 194: LEB# 192 extract_blocks Block: PEB# 195: LEB# 193 extract_blocks Block: PEB# 196: LEB# 194 extract_blocks Block: PEB# 197: LEB# 195 extract_blocks Block: PEB# 198: LEB# 196 extract_blocks Block: PEB# 199: LEB# 197 extract_blocks Block: PEB# 200: LEB# 198 extract_blocks Block: PEB# 201: LEB# 199 extract_blocks Block: PEB# 202: LEB# 200 extract_blocks Block: PEB# 203: LEB# 201 extract_blocks Block: PEB# 204: LEB# 202 extract_blocks Block: PEB# 205: LEB# 203 extract_blocks Block: PEB# 206: LEB# 204 extract_blocks Block: PEB# 207: LEB# 205 extract_blocks Block: PEB# 208: LEB# 206 extract_blocks Block: PEB# 209: LEB# 207 extract_blocks Block: PEB# 210: LEB# 208 extract_blocks Block: PEB# 211: LEB# 209 extract_blocks Block: PEB# 212: LEB# 210 extract_blocks Block: PEB# 213: LEB# 211 extract_blocks Block: PEB# 214: LEB# 212 extract_blocks Block: PEB# 215: LEB# 213 extract_blocks Block: PEB# 216: LEB# 214 extract_blocks Block: PEB# 217: LEB# 215 extract_blocks Block: PEB# 218: LEB# 216 extract_blocks Block: PEB# 219: LEB# 217 extract_blocks Block: PEB# 220: LEB# 218 extract_blocks Block: PEB# 221: LEB# 219 extract_blocks Block: PEB# 222: LEB# 220 extract_blocks Block: PEB# 223: LEB# 221 extract_blocks Block: PEB# 224: LEB# 222 extract_blocks Block: PEB# 225: LEB# 223 extract_blocks Block: PEB# 226: LEB# 224 extract_blocks Block: PEB# 227: LEB# 225 extract_blocks Block: PEB# 228: LEB# 226 extract_blocks Block: PEB# 229: LEB# 227 extract_blocks Block: PEB# 230: LEB# 228 extract_blocks Block: PEB# 231: LEB# 229 extract_blocks Block: PEB# 232: LEB# 230 extract_blocks Block: PEB# 233: LEB# 231 extract_blocks Block: PEB# 234: LEB# 232 extract_blocks Block: PEB# 235: LEB# 233 extract_blocks Block: PEB# 236: LEB# 234 extract_blocks Block: PEB# 237: LEB# 235 extract_blocks Block: PEB# 238: LEB# 236 extract_blocks Block: PEB# 239: LEB# 237 extract_blocks Block: PEB# 240: LEB# 238 extract_blocks Block: PEB# 241: LEB# 239 extract_blocks Block: PEB# 242: LEB# 240 extract_blocks Block: PEB# 243: LEB# 241 extract_blocks Block: PEB# 244: LEB# 242 extract_blocks Block: PEB# 245: LEB# 243 extract_blocks Block: PEB# 246: LEB# 244 extract_blocks Block: PEB# 247: LEB# 245 extract_blocks Block: PEB# 248: LEB# 246 extract_blocks Block: PEB# 249: LEB# 247 extract_blocks Block: PEB# 250: LEB# 248 extract_blocks Block: PEB# 251: LEB# 249 extract_blocks Block: PEB# 252: LEB# 250 extract_blocks Block: PEB# 253: LEB# 251 extract_blocks Block: PEB# 254: LEB# 252 extract_blocks Block: PEB# 255: LEB# 253 extract_blocks Block: PEB# 256: LEB# 254 extract_blocks Block: PEB# 257: LEB# 255 extract_blocks Block: PEB# 258: LEB# 256 extract_blocks Block: PEB# 259: LEB# 257 extract_blocks Block: PEB# 260: LEB# 258 extract_blocks Block: PEB# 261: LEB# 259 extract_blocks Block: PEB# 262: LEB# 260 extract_blocks Block: PEB# 263: LEB# 261 extract_blocks Block: PEB# 264: LEB# 262 extract_blocks Block: PEB# 265: LEB# 263 extract_blocks Block: PEB# 266: LEB# 264 extract_blocks Block: PEB# 267: LEB# 265 extract_blocks Block: PEB# 268: LEB# 266 extract_blocks Block: PEB# 269: LEB# 267 extract_blocks Block: PEB# 270: LEB# 268 extract_blocks Block: PEB# 271: LEB# 269 extract_blocks Block: PEB# 272: LEB# 270 extract_blocks Block: PEB# 273: LEB# 271 extract_blocks Block: PEB# 274: LEB# 272 extract_blocks Block: PEB# 275: LEB# 273 extract_blocks Block: PEB# 276: LEB# 274 extract_blocks Block: PEB# 277: LEB# 275 extract_blocks Block: PEB# 278: LEB# 276 extract_blocks Block: PEB# 279: LEB# 277 extract_blocks Block: PEB# 280: LEB# 278 extract_blocks Block: PEB# 281: LEB# 279 extract_blocks Block: PEB# 282: LEB# 280 extract_blocks Block: PEB# 283: LEB# 281 extract_blocks Block: PEB# 284: LEB# 282 read Error: Block ends at 37486592 which is greater than file size 37355540 extract_blocks Fatal: PEB: 285: Bad Read Offset Request here the file https://repository.ilpuntotecnicoeadsl.com/index. php?dir=Ansuel/&file=2C0000.ubi — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#22>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA1dGZ0zB-LK5bKdeuFhau5VGBlJe9vbks5tw1L-gaJpZM4T49NO> .

[Christian Marangi]

Actually this is from a downloaded firmware extracted from binwalk... It shouldn't be corrupted as normally this should be flashed on a clean nand.
Any idea?

[Jason Pruitt]

I'm not really sure then, so far it has always been an incomplete image that causes this. If you have the file it was extracted from, you might try just running that through ubi_reader. You may have to set the start address, if there are false positives it finds though.